Collatz in Python in chars. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 187th andrewjc2000 781 73 33ms 23 Feb 2025 187th Languag3 781 73 21ms 27 Feb 2025 187th Bulmenisaurus 781 73 24ms 2 Mar 2025 187th souta-1326 781 73 20ms 1 Apr 2025 187th BenjaminHGong 781 73 22ms 26 May 2025 187th FEZfan 🇦🇺 781 73 20ms 11 Jul 2025 187th wuduculfre 781 73 23ms 28 Jul 2025 187th BREMAUCY 🇫🇷 781 73 24ms 24 Aug 2025 187th FortuiteMan 🇫🇷 781 73 22ms 27 days ago 187th miaoaixuan 781 73 23ms 25 days ago 236th TobyBoyne 🇬🇧 770 74 28ms 4 May 2022 236th RDShah 770 74 22ms 6 May 2022 236th Indivicivet 770 74 20ms 9 May 2022 236th CedricGebistorf 770 74 18ms 9 May 2022 236th ophact 770 74 22ms 11 May 2022 236th ImpressedByRocks 770 74 22ms 17 May 2022 236th LHuitre 770 74 20ms 2 Jun 2022 236th neihousaigaai 770 74 19ms 8 Jun 2022 236th rowboat1 770 74 21ms 10 Jun 2022 236th inverseLorentz 🇦🇺 770 74 22ms 13 Jun 2022 236th clementblaudeau 770 74 24ms 29 Jun 2022 236th adoxography 770 74 20ms 13 Jul 2022 236th Attero 🇸🇪 770 74 28ms 20 Jul 2022 236th Heathcorp 🇦🇺 770 74 27ms 27 Jul 2022 236th jfallon1997 770 74 20ms 11 Aug 2022 236th VictorFordham 770 74 24ms 26 Aug 2022 236th georgehulme 770 74 20ms 1 Sep 2022 236th smartiel 770 74 22ms 15 Sep 2022 236th trist224 🇫🇷 770 74 19ms 21 Sep 2022 236th Kloppermand 🇩🇰 770 74 27ms 7 Oct 2022 236th knutae 🇳🇴 770 74 22ms 9 Oct 2022 236th Troon 770 74 21ms 14 Oct 2022 236th MaxElf999 770 74 21ms 14 Oct 2022 236th SniperSmiley 🇺🇸 770 74 23ms 6 Dec 2022 236th elephantpanda 770 74 20ms 10 Dec 2022 236th ArthurBond 770 74 21ms 19 Dec 2022 236th Larspolo 770 74 24ms 25 Dec 2022 236th dcc5480 770 74 21ms 12 Jan 2023 236th Ripick 770 74 20ms 1 Feb 2023 236th m3nt0ras 🇬🇷 770 74 20ms 3 Feb 2023 236th Skwerl23 770 74 20ms 5 Feb 2023 236th frankgraziano 770 74 21ms 19 Feb 2023 236th KenanHanke 770 74 20ms 21 Feb 2023 236th DanielPeterssonAI 770 74 21ms 13 Mar 2023 236th jiaminglimjm 🇲🇾 770 74 20ms 20 Mar 2023 236th ejini6969 770 74 20ms 22 Mar 2023 236th GulgDev 770 74 24ms 22 Mar 2023 236th vrnprkh 770 74 29ms 30 Mar 2023 236th RuyiLi 770 74 20ms 1 Apr 2023 236th StardustGogeta 770 74 24ms 7 May 2023 236th zbreit 🇺🇸 770 74 21ms 7 May 2023 236th kyleclaassen 770 74 20ms 20 May 2023 236th mbittner20 770 74 19ms 27 May 2023 236th tweska 🇳🇱 770 74 23ms 5 Jun 2023 236th cros107 🇦🇺 770 74 28ms 11 Aug 2023 236th yourlefthandman 770 74 22ms 16 Aug 2023 236th daisyyedda 770 74 22ms 17 Aug 2023 236th cesarm4 770 74 20ms 29 Aug 2023 236th midnattssol 🇸🇪 770 74 20ms 22 Sep 2023 236th lambda-abstraction 770 74 20ms 21 Oct 2023 236th levavft 770 74 21ms 26 Oct 2023 236th Buecherfresser 770 74 23ms 22 Nov 2023 236th anarconic 770 74 61ms 8 Dec 2023 236th AntoineBlondon 770 74 20ms 11 Dec 2023 236th kurkale6ka 770 74 24ms 20 Dec 2023 236th Anonymousellama21 770 74 29ms 14 Mar 2024 236th Bmrl7 770 74 21ms 23 Mar 2024 236th cefqrn 770 74 20ms 26 May 2024 236th drochom 770 74 18ms 18 Jun 2024 236th hiichbindermax 770 74 30ms 22 Jun 2024 236th madex 🇩🇪 770 74 27ms 9 Jul 2024 236th cykim8811 770 74 49ms 11 Jul 2024 236th imelxr 🇮🇱 770 74 27ms 17 Aug 2024 236th EnTerr 770 74 28ms 25 Aug 2024 236th Mabeloid 🇳🇴 770 74 24ms 1 Sep 2024 First Prev 226–300 of 792 Next Last